New customer: Voucher is valid only on first purchase for one-time use.Specific customer: Voucher is created only for a specific customer, and cannot be shared with other customer accounts.Specific category: Voucher is only valid for items from certain categories (e.g. shoes only/apparel only).Items on markdown: Voucher does not apply to items already on discounts.One-time use only: Most voucher codes are generated for one-time use only, unless stated otherwise.App purchases: Voucher is only valid for purchases made using our mobile app.